PGXC_NODE

oid

oid

Row identifier (hidden attribute, which must be specified).

node_name

name

Node name.

node_type

"char"

node_port

integer

Port ID of the node.

node_host

name

Host name or IP address of a node. (If a virtual IP address is configured, its value is a virtual IP address.)

node_port1

integer

Port number of a replication node.

node_host1

name

Host name or IP address of a replication node. (If a virtual IP address is configured, its value is a virtual IP address.)

hostis_primary

Boolean

Specifies whether a primary/standby switchover occurs on the current node.

• t (true): yes
• f (false): no

nodeis_primary

Boolean

Specifies whether the current node is preferred to execute non-query operations in the replication table.

• t (true): yes
• f (false): no

nodeis_preferred

Boolean

Specifies whether the current node is preferred to execute queries in the replication table.

• t (true): yes
• f (false): no

node_id

integer

Node ID. The value is obtain by calculating the value of node_name using the hash function.

sctp_port

integer

Port used by the TCP proxy communications library of the primary node to listen to the data channel. (The SCTP communications library is no longer supported in the current version.)

control_port

integer

Port used by the TCP proxy communications library of the primary node to listen to the control channel.

sctp_port1

integer

Port used by the TCP proxy communications library of the standby node to listen to the data channel. (The SCTP communications library is no longer supported in the current version.)

control_port1

integer

Port used by the TCP proxy communications library of the standby node to listen to the control channel.

nodeis_central

Boolean

Specifies whether the current node is a central control node. It is used only for CNs and is invalid for DNs.

• t (true): yes
• f (false): no

nodeis_active

Boolean

Specifies whether the current node is normal. It is used to mark whether the CN is removed and is invalid for DNs.

• t (true): yes
• f (false): no